Validate presence of polymorphic parent

Question

I am developing a Rails 3.2 application with the following models:

class User < ActiveRecord::Base
  # Associations
  belongs_to :authenticatable, polymorphic         


        

Answer 1

In the create action, I had to assign it manually:

@physician = Physician.new(params[:physician])
@physician.user.authenticatable = @physician

My problem is a little different (has_many and with different validation), but I think this should work.